source: trunk/libdjvu/DjVuErrorList.h @ 101

Last change on this file since 101 was 17, checked in by Eugene Romanenko, 16 years ago

update makefiles, remove absolute paths, update djvulibre to version 3.5.17

File size: 6.5 KB
Line 
1//C-  -*- C++ -*-
2//C- -------------------------------------------------------------------
3//C- DjVuLibre-3.5
4//C- Copyright (c) 2002  Leon Bottou and Yann Le Cun.
5//C- Copyright (c) 2001  AT&T
6//C-
7//C- This software is subject to, and may be distributed under, the
8//C- GNU General Public License, Version 2. The license should have
9//C- accompanied the software or you may obtain a copy of the license
10//C- from the Free Software Foundation at http://www.fsf.org .
11//C-
12//C- This program is distributed in the hope that it will be useful,
13//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
14//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15//C- GNU General Public License for more details.
16//C-
17//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
18//C- distributed by Lizardtech Software.  On July 19th 2002, Lizardtech
19//C- Software authorized us to replace the original DjVu(r) Reference
20//C- Library notice by the following text (see doc/lizard2002.djvu):
21//C-
22//C-  ------------------------------------------------------------------
23//C- | DjVu (r) Reference Library (v. 3.5)
24//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
25//C- | The DjVu Reference Library is protected by U.S. Pat. No.
26//C- | 6,058,214 and patents pending.
27//C- |
28//C- | This software is subject to, and may be distributed under, the
29//C- | GNU General Public License, Version 2. The license should have
30//C- | accompanied the software or you may obtain a copy of the license
31//C- | from the Free Software Foundation at http://www.fsf.org .
32//C- |
33//C- | The computer code originally released by LizardTech under this
34//C- | license and unmodified by other parties is deemed "the LIZARDTECH
35//C- | ORIGINAL CODE."  Subject to any third party intellectual property
36//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
37//C- | non-exclusive license to make, use, sell, or otherwise dispose of
38//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
39//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
40//C- | General Public License.   This grant only confers the right to
41//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
42//C- | the extent such infringement is reasonably necessary to enable
43//C- | recipient to make, have made, practice, sell, or otherwise dispose
44//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
45//C- | any greater extent that may be necessary to utilize further
46//C- | modifications or combinations.
47//C- |
48//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
49//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
50//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
51//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
52//C- +------------------------------------------------------------------
53//
54// $Id: DjVuErrorList.h,v 1.9 2003/11/07 22:08:20 leonb Exp $
55// $Name:  $
56
57#ifndef _DJVUERRORLIST_H
58#define _DJVUERRORLIST_H
59#ifdef HAVE_CONFIG_H
60#include "config.h"
61#endif
62#if NEED_GNUG_PRAGMAS
63# pragma interface
64#endif
65
66
67#include "DjVuPort.h"
68
69#ifdef HAVE_NAMESPACES
70namespace DJVU {
71# ifdef NOT_DEFINED // Just to fool emacs c++ mode
72}
73#endif
74#endif
75
76class ByteStream;
77
78/** @name DjVuErrorList.h
79    This file implements a very simple class for redirecting port caster
80    messages that would normally end up on stderr to a double linked list.
81
82    @memo DjVuErrorList class.
83    @author Bill C Riemers <docbill@sourceforge.net>
84    @version #$Id: DjVuErrorList.h,v 1.9 2003/11/07 22:08:20 leonb Exp $#
85*/
86
87//@{
88
89/** #DjVuErrorList# provides a convenient way to redirect error messages
90    from classes derived from DjVuPort to a list that can be accessed at
91    any time. */
92
93class DjVuErrorList : public DjVuSimplePort
94{
95protected:
96     /// The normal port caster constructor.
97  DjVuErrorList(void);
98public:
99  static GP<DjVuErrorList> create(void) {return new DjVuErrorList();}
100
101     /// This constructor allows the user to specify the ByteStream.
102  GURL set_stream(GP<ByteStream>);
103
104     /// Append all error messages to the list
105  virtual bool notify_error(const DjVuPort * source, const GUTF8String & msg);
106
107     /// Append all status messages to the list
108  virtual bool notify_status(const DjVuPort * source, const GUTF8String & msg);
109
110     /// Add a new class to have its messages redirected here.
111  inline void connect( const DjVuPort &port);
112
113     /// Get the listing of errors, and clear the list.
114  inline GList<GUTF8String> GetErrorList(void);
115
116     /// Just clear the list.
117  inline void ClearError(void);
118
119     /// Get one error message and clear that message from the list.
120  GUTF8String GetError(void);
121
122     /// Check if there are anymore error messages.
123  inline bool HasError(void) const;
124
125     /// Get the listing of status messages, and clear the list.
126  inline GList<GUTF8String> GetStatusList(void);
127
128     /// Just clear the list.
129  inline void ClearStatus(void);
130
131     /// Get one status message and clear that message from the list.
132  GUTF8String GetStatus(void);
133
134     /// Check if there are any more status messages.
135  inline bool HasStatus(void) const;
136
137     /** This gets the data.  We can't use the simple port's request
138       data since we want to allow the user to specify the ByteStream. */
139  virtual GP<DataPool> request_data (
140    const DjVuPort * source, const GURL & url );
141
142private:
143  GURL pool_url;
144  GP<DataPool> pool;
145  GList<GUTF8String> Errors;
146  GList<GUTF8String> Status;
147private: //dummy stuff
148  static GURL set_stream(ByteStream *);
149};
150
151inline void
152DjVuErrorList::connect( const DjVuPort &port )
153{ get_portcaster()->add_route(&port, this); }
154
155inline GList<GUTF8String>
156DjVuErrorList::GetErrorList(void)
157{
158  GList<GUTF8String> retval=(const GList<GUTF8String>)Errors;
159  Errors.empty();
160  return retval;
161}
162
163inline void
164DjVuErrorList::ClearError(void)
165{ Errors.empty(); }
166
167inline GList<GUTF8String>
168DjVuErrorList::GetStatusList(void)
169{
170  GList<GUTF8String> retval=(const GList<GUTF8String>)Status;
171  Status.empty();
172  return retval;
173}
174
175inline void
176DjVuErrorList::ClearStatus(void)
177{ Status.empty(); }
178
179inline bool
180DjVuErrorList::HasError(void) const
181{ return !Errors.isempty(); }
182
183inline bool
184DjVuErrorList::HasStatus(void) const
185{ return !Status.isempty(); }
186
187
188#ifdef HAVE_NAMESPACES
189}
190# ifndef NOT_USING_DJVU_NAMESPACE
191using namespace DJVU;
192# endif
193#endif
194#endif
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